Intermittent failure: NullPointerException during undeployment -------------------------------------------------------------- Key: WFLY-5178 URL: https://issues.jboss.org/browse/WFLY-5178 Project: WildFly Issue Type: Bug Components: Clustering, EJB Affects Versions: 10.0.0.Beta1 Reporter: Michal Vinkler Assignee: Paul Ferraro Intermittent failure, so far seen in only one failover test for remote stateful EJBs: scenario ejb-ejbremote-undeploy-dist-async Setup: 4 node cluster, one node at time undeploys application (clusterbench-ee7.ear), while standalone clients keep calling the application. Just before server perf19 finished undeployment of the application, it logged this error 50 times: {code} [JBossINF] [0m[31m14:50:41,136 ERROR [org.jboss.as.ejb3.remote] (EJB default - 9) WFLYEJB0151: Exception while generating session id for component RemoteStatefulSBImpl with invocation id: -28551 on channel Channel ID 1ca843e6 (inbound) of Remoting connection 4b2907f9 to /10.16.90.52:58920: javax.ejb.EJBException: java.lang.NullPointerException [JBossINF] at org.jboss.as.ejb3.component.stateful.StatefulSessionComponent.createSessionRemote(StatefulSessionComponent.java:263) [JBossINF] at org.jboss.as.ejb3.remote.protocol.versionone.SessionOpenRequestHandler$SessionIDGeneratorTask.run(SessionOpenRequestHandler.java:145) [JBossINF] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [JBossINF] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [JBossINF] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [JBossINF] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [JBossINF] at java.lang.Thread.run(Thread.java:745) [JBossINF] at org.jboss.threads.JBossThread.run(JBossThread.java:320) [JBossINF] Caused by: java.lang.NullPointerException [JBossINF] at org.jboss.as.ejb3.component.stateful.StatefulSessionComponent.createSession(StatefulSessionComponent.java:238) [JBossINF] at org.jboss.as.ejb3.component.stateful.StatefulSessionComponent.createSessionRemote(StatefulSessionComponent.java:258) [JBossINF] ... 7 more {code} The other nodes did not log this error. Server log: http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-7x-failover-ejb-e...